drivers/net/wireless/atmel/atmel_cs.c

   1 /*** -*- linux-c -*- **********************************************************
   2
   3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5         Copyright 2000-2001 ATMEL Corporation.
   6         Copyright 2003 Simon Kelley.
   7
   8     This code was developed from version 2.1.1 of the Atmel drivers,
   9     released by Atmel corp. under the GPL in December 2002. It also
  10     includes code from the Linux aironet drivers (C) Benjamin Reed,
  11     and the Linux PCMCIA package, (C) David Hinds.
  12
  13     For all queries about this code, please contact the current author,
  14     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  15
  16     This program is free software; you can redistribute it and/or modify
  17     it under the terms of the GNU General Public License as published by
  18     the Free Software Foundation; either version 2 of the License, or
  19     (at your option) any later version.
  20
  21     This software is distributed in the hope that it will be useful,
  22     but WITHOUT ANY WARRANTY; without even the implied warranty of
  23     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24     GNU General Public License for more details.
  25
  26     You should have received a copy of the GNU General Public License
  27     along with Atmel wireless lan drivers; if not, see
  28     <http://www.gnu.org/licenses/>.
  29
  30 ******************************************************************************/
  31
  32 #ifdef __IN_PCMCIA_PACKAGE__
  33 #include <pcmcia/k_compat.h>
  34 #endif
  35 #include <linux/kernel.h>
  36 #include <linux/module.h>
  37 #include <linux/ptrace.h>
  38 #include <linux/slab.h>
  39 #include <linux/string.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/moduleparam.h>
  42 #include <linux/device.h>
  43
  44 #include <pcmcia/cistpl.h>
  45 #include <pcmcia/cisreg.h>
  46 #include <pcmcia/ds.h>
  47 #include <pcmcia/ciscode.h>
  48
  49 #include <asm/io.h>
  50 #include <linux/wireless.h>
  51
  52 #include "atmel.h"
  53
  54
  55 /*====================================================================*/
  56
  57 MODULE_AUTHOR("Simon Kelley");
  58 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  59 MODULE_LICENSE("GPL");
  60 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
  61
  62 /*====================================================================*/
  63
  64 static int atmel_config(struct pcmcia_device *link);
  65 static void atmel_release(struct pcmcia_device *link);
  66
  67 static void atmel_detach(struct pcmcia_device *p_dev);
  68
  69 struct local_info {
  70         struct net_device *eth_dev;
  71 };
  72
  73 static int atmel_probe(struct pcmcia_device *p_dev)
  74 {
  75         struct local_info *local;
  76
  77         dev_dbg(&p_dev->dev, "atmel_attach()\n");
  78
  79         /* Allocate space for private device-specific data */
  80         local = kzalloc(sizeof(*local), GFP_KERNEL);
  81         if (!local)
  82                 return -ENOMEM;
  83
  84         p_dev->priv = local;
  85
  86         return atmel_config(p_dev);
  87 } /* atmel_attach */
  88
  89 static void atmel_detach(struct pcmcia_device *link)
  90 {
  91         dev_dbg(&link->dev, "atmel_detach\n");
  92
  93         atmel_release(link);
  94
  95         kfree(link->priv);
  96 }
  97
  98 /* Call-back function to interrogate PCMCIA-specific information
  99    about the current existence of the card */
 100 static int card_present(void *arg)
 101 {
 102         struct pcmcia_device *link = (struct pcmcia_device *)arg;
 103
 104         if (pcmcia_dev_present(link))
 105                 return 1;
 106
 107         return 0;
 108 }
 109
 110 static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 111 {
 112         if (p_dev->config_index == 0)
 113                 return -EINVAL;
 114
 115         return pcmcia_request_io(p_dev);
 116 }
 117
 118 static int atmel_config(struct pcmcia_device *link)
 119 {
 120         int ret;
 121         const struct pcmcia_device_id *did;
 122
 123         did = dev_get_drvdata(&link->dev);
 124
 125         dev_dbg(&link->dev, "atmel_config\n");
 126
 127         link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 128                 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 129
 130         if (pcmcia_loop_config(link, atmel_config_check, NULL))
 131                 goto failed;
 132
 133         if (!link->irq) {
 134                 dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 135                 goto failed;
 136         }
 137
 138         ret = pcmcia_enable_device(link);
 139         if (ret)
 140                 goto failed;
 141
 142         ((struct local_info *)link->priv)->eth_dev =
 143                 init_atmel_card(link->irq,
 144                                 link->resource[0]->start,
 145                                 did ? did->driver_info : ATMEL_FW_TYPE_NONE,
 146                                 &link->dev,
 147                                 card_present,
 148                                 link);
 149         if (!((struct local_info *)link->priv)->eth_dev)
 150                         goto failed;
 151
 152
 153         return 0;
 154
 155  failed:
 156         atmel_release(link);
 157         return -ENODEV;
 158 }
 159
 160 static void atmel_release(struct pcmcia_device *link)
 161 {
 162         struct net_device *dev = ((struct local_info *)link->priv)->eth_dev;
 163
 164         dev_dbg(&link->dev, "atmel_release\n");
 165
 166         if (dev)
 167                 stop_atmel_card(dev);
 168         ((struct local_info *)link->priv)->eth_dev = NULL;
 169
 170         pcmcia_disable_device(link);
 171 }
 172
 173 static int atmel_suspend(struct pcmcia_device *link)
 174 {
 175         struct local_info *local = link->priv;
 176
 177         netif_device_detach(local->eth_dev);
 178
 179         return 0;
 180 }
 181
 182 static int atmel_resume(struct pcmcia_device *link)
 183 {
 184         struct local_info *local = link->priv;
 185
 186         atmel_open(local->eth_dev);
 187         netif_device_attach(local->eth_dev);
 188
 189         return 0;
 190 }
 191
 192 /*====================================================================*/
 193 /* We use the driver_info field to store the correct firmware type for a card. */
 194
 195 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
 196         .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
 197                         PCMCIA_DEV_ID_MATCH_CARD_ID, \
 198         .manf_id = (manf), \
 199         .card_id = (card), \
 200         .driver_info = (kernel_ulong_t)(info), }
 201
 202 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
 203         .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
 204                         PCMCIA_DEV_ID_MATCH_PROD_ID2, \
 205         .prod_id = { (v1), (v2), NULL, NULL }, \
 206         .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
 207         .driver_info = (kernel_ulong_t)(info), }
 208
 209 static const struct pcmcia_device_id atmel_ids[] = {
 210         PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
 211         PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
 212         PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
 213         PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
 214         PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
 215         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
 216         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
 217         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
 218         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
 219         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
 220         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
 221         PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
 222         PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
 223         PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
 224         PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
 225         PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
 226         PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
 227         PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
 228         PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
 229         PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
 230         PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
 231         PCMCIA_DEVICE_NULL
 232 };
 233
 234 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
 235
 236 static struct pcmcia_driver atmel_driver = {
 237         .owner          = THIS_MODULE,
 238         .name           = "atmel_cs",
 239         .probe          = atmel_probe,
 240         .remove         = atmel_detach,
 241         .id_table       = atmel_ids,
 242         .suspend        = atmel_suspend,
 243         .resume         = atmel_resume,
 244 };
 245 module_pcmcia_driver(atmel_driver);
 246
 247 /*
 248     This program is free software; you can redistribute it and/or
 249     modify it under the terms of the GNU General Public License
 250     as published by the Free Software Foundation; either version 2
 251     of the License, or (at your option) any later version.
 252
 253     This program is distributed in the hope that it will be useful,
 254     but WITHOUT ANY WARRANTY; without even the implied warranty of
 255     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 256     GNU General Public License for more details.
 257
 258     In addition:
 259
 260     Redistribution and use in source and binary forms, with or without
 261     modification, are permitted provided that the following conditions
 262     are met:
 263
 264     1. Redistributions of source code must retain the above copyright
 265        notice, this list of conditions and the following disclaimer.
 266     2. Redistributions in binary form must reproduce the above copyright
 267        notice, this list of conditions and the following disclaimer in the
 268        documentation and/or other materials provided with the distribution.
 269     3. The name of the author may not be used to endorse or promote
 270        products derived from this software without specific prior written
 271        permission.
 272
 273     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 274     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 275     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 276     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 277     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 278     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 279     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 280     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 281     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 282     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 283     POSSIBILITY OF SUCH DAMAGE.
 284 */